Adjustable standard for portable lamps.



A. S. LYHNB.

ADJUSTABLE STANDARD FOR PORT BLE LAMPS. APPLICATION FILED JUNE16,1911.

1,012,383, Patented Dec.19,1911.

' ATTORNEY UNITE ANKER S. LYHNE,

OF BRIDGEIPORT,

CONNECTICUT.

ADJUSTABLE STANDARD FOR PORTABLE LAMPS.

Specification of Letters Patent.

Application filed June 16, 1911.

Patented Dec. 19, 1911.

Serial No. 633,638.

1 '0 all whom it may concern:

Be it known that I, ANKnn S. LY'I-INE, a citizen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improvement in Adjustable Standards for Portable Lamps, of which the following is a specification.

This invention has for its object to provide a portable standard for electric lamps and the like which is capable of wide adjustability in order to accommodate the same to various conditions of use and which may be easily and quickly adjusted in any desired way and securely held in adjusted position by the manipulation of a single clamping device. These and other objects of the invention, together with means where by the same may be carried into effect, will best be understood from the following description of one form or embodiment thereof illustrated in the accompanying drawings. It will be understood however that the invention is not limited to the construction shown and described, but maybe embodied in other forms without departing from the spirit and scope thereof.

In said drawings: Figure 1 is a side elevation of the device in one position of adjustment. Fig. 2 is a similar view, partly broken away, showing the parts in a different position of adjustment. Fig. 3 is a fragmentary elevation, partly in section, of the adjustable joint, showing the same released and in a condition for universal adjustment. Fig. 41 is a similar View showing the parts locked against swinging adjustmeat but capable of a sliding adjustment. Fig. 5 is a similar view showing the parts securely clamped in adjusted position against movement of any character. Fig. 6 is a detail view, partly in section, of one of the members of the adjustable joint, showing a modification. Fig. 7 is an enlarged detail view, partly in section, of the means for attaching the reflector to its supporting arm. Fig. 8 is a detail view of the outer end of the supporting arm with the reflector detached. Fig. 9 is a fragmentary face view of that portion of the reflector to which the supporting arm is attached.

In the application of the invention shown, 10 denotes an ornamental casing for an electric lamp socket 15, and 13 a lamp in said socket.

11 denotes a reflector which is provided with a sleeve 12 inclosing the lower portion of the lamp 13 and adapted to turn freely on the casing 10. The reflector is secured to the casing in any suitable manner, as by means of a spring latch 141 which engages a rib 16 on the casing. This spring latch attaches the reflector securely in place, but leaves it free to be rotated on the casing 10 and readily detachable therefrom. The casing is supported by the reflector which in turn is supported by an arm 17. The arm 17 is preferably made of tubular form and is provided with an enlarged and flattened head 18 provided with struck up lug or lugs 19 adapted to enter apertures 20 in the reflector 11 and with a square or other non circular opening 21. 22 denotes a similar opening in the reflector 11 which together with said opening 21, receives a correspondingly shaped portion 23 of a bolt 24 provided with a head 25 lying against the inner face of the reflector 11.

26 denotes an arm loosely mounted on the bolt 2st and adapted to carry at its outer end a suitable shade. This shade is not shown as neither it nor the supporting arm therefor form any portion of the present invention.

27 denotes a nut on the bolt 24; which, when screwed up, clamps together the reflector 11 and supporting arms 17 and 26. The squared portion 23 on the bolt 24 which is received in the squared openings 21 and 22 of the arm 17 and reflector 11, respectively, together with the engagement of the lugs 19 on the arm 17 with the apertures 20 in the reflector 11, effectually prevent any relative turning of these members so that the said reflector with its attached socket and lamp is rigidly and firmly supported by the arm 17.

28 denotes a standard or upright projecting from and forming part of a suitable base 29. The base 29 with its upright portion 28 is preferably made hollow, said base being weighted and rendered substantial in any suitable way, as by the insertion of the casting 30.

31 denotes a head having a shank 32 received to turn or swivel in an opening in the top of the standard 28.

33 denotes washers on the shank 32 between which is interposed a spring 34 whose tension may be adjusted by means of a nut 35' on the threaded end 36 of the shank 32. The nut 35 serves to retain the head 31 upon the standard 28, while the spring 34 and washers 33 provide a frictional detent which yieldingly holds the head 31 and part-s carried thereby in any position into which they may be turned upon the shank 32 as an aXis. The head 31 is provided with a bore 37 in which is journaled a stud 38' having a threaded end 39 and a cylindrical head 40 provided with a transverse bore 41. Said stud is also slidable longitudinally in said bore 37. r

42 denotes a thimble inclosing the head 40 and provided with openings 43 registering with the ends of the bore 41, said thimble having also a notched or serrated edge 44 cooperating with a similar edge or surface 45 on the head 31 surrounding the bore 37.

46 denotes a' counterbore in the head 31 in which is located a spring 47 bearing at one end upon the bottom of said counterbore and at the othervupon the head 40 and tending to slide the stud 38 in the bore 37. The action of the spring 47 is normally resisted and the parts clamped in adjusted posit-ion by means of a thumb nut 48 engaging the threaded end 39 of the stud 38. In the construction of head shown in Fig. 6'the counterbore 46 and spring 47 are omitted. The arm 17 is slidably mounted in the bore 41, its movement therein being preferably limited in one direction by a screw cap 49 on the end of said arm and in the other direction by a rib 50 formed on said arm at a point intermediate its length.

The operation of adjust-ing the device is as follows. If it be desired to make a general adjustment of the lamp, that is to say by sliding the arm 17 in or out and simultaneously by swinging the same up or down, the thumb nut 48 is loosened to a suflicient extent to permit the spring 47 to move the parts into the position shown in Fig. 3. Where no spring 47 is employed, as in Fig. 6, the parts may, if necessary, be moved into the position shown in Fig. 3 by hand. It has been found, however, that when the nut 48 is loosened to a suflicient extent the parts will separate of themselves an amount necessary to permit the desired adjustment. With the parts as shown in Fig. 3 it will be seen that the arm 17 can be slid longitudinally in either direction in the head 40 and as shown in this figure the arm 17 may still be freely slid longitudinally in the head 40, but the interengagement of the notched edges 44 and 45 on the thimble 42 and head 31 respectively positively prevents any turning of the head 40 with respect to the head 31. This feature is of convenience when using the standard in positions similar to that shown in Fig. 2, since it will be seen that the joint can be loosened to permit the arm 17 to be slid in or out as occasion may demand without so loosening the parts as to permit said arm with its attached lamp to drop or swing downward by gravity which might result in damage to the lamp or to other articles unless special attention were given to prevent such action.' After the parts have been put into the desired position of adjustment they are securely clamped therein by fully tightening up the nut 18, thereby bringing the parts into the position shown in Fig. 5. By this action the serrated edges of the thimble 42 and head 31 are brought into close engagement, thereby positively holding the head 40 against turning,

while the arm 17 is frictionallybut tightly clamped at its opposite sides between the wall of the bore 41 on the one hand and the edges of the openings 43 on the other, thereby holding said arm against longitudinal movement. The clamping action of the head 40 and thimble 42 on the arm 17 has been found to be an extremely strong one since it causes the arm to be engaged at both sides and at a plurality of points in its length so that said arm is held much more securely than is possible with the use of set screws or similar clamping devices as heretofore used. As will now be seen the parts be loosened to permit them to be adjusted in one or a plurality of ways and'when so adjusted may be secured in the exact position desired by the manipulation of one clamping device only, thereby obviating the necessity of holding the parts in adjusted position by hand while a number of mechanical devices are operated in order to lock the device against the various movements involved in the universal adjustment.

Having thus described my invention I claim:

L A standard for lamps comprising an arm provided with one or more projecting lugs, means for supporting said arm, a reflector provided with an aperture or apertures in which said lugs are received, means for clamping said reflector to said arm, and means for supporting a lamp in said reflector.

2. A standard for lamps comprising an arm provided with a non-circular opening, a

reflector having a similar opening, a bolt having at one end a head and intermediate its ends a non-circular portion fitting the openings in said varm and reflector, a nut on said bolt for clamping said reflector and arm together, means for supporting said arm, and means for supporting a lamp' in said reflector.

3. A standard for lamps comprising an arm provided with one or more projecting lugs and with a non-circular opening, a reflector having a similar opening and having an aperture or apertures in which said lugs are received, a bolt having at one end a head and intermediate its ends a non-circular portion fitting the openings in said arm and reflector, a nut on said bolt for clamping said reflector and arm together, means for supporting said arm, and means for supporting a lamp in said reflector.

4:. An adjustable standard for lamps and the like comprising a head, a stud slidably mounted in said head and provided with a transverse bore, a thimble on said stud having openings registering with the ends of said bore, the end of said thimble engaging said head, an arm slidably mounted in said bore and openings, and a nut on said stud and engaging said head to clamp said arm between the side of said bore and the edges of said openings.

5. An adjustable standard for lamps and the like comprising a support, a member mounted to turn in said support, an arm slidably mounted in said member, and a single device for simultaneously clamping said arm in said member and said member in said support.

6. An adjustable standard for lamps and the like comprising a base, a support mounted to turn on said base, a member mounted to turn on said support, an arm slidably mounted in said member, and a single device for simultaneously clamping said arm in said member and said member in said support.

7 An adjustable standard for lamps and the like comprising a head, a stud mounted to turn and slide in said head, an arm slidably mounted in said stud, means for clamping said arm in said stud, and means for securing said stud in said head and for operating said clamping means to clamp said arm in said stud.

8. An adjustable standard for lamps and the like comprising a head, a stud mounted to turn and slide in said head and provided beyond said head with a transverse bore, a thimble on said stud having openings registering with the ends of said bore, the end of said thimble engaging said head, an arm slidably mounted in said bore and openings, and a nut on said stud and engaging said head to clamp said stud in said head and simultaneously clamp said arm between the side of said bore and the edges of said openings.

9. An adjustable standard for lamps and the like comprising an arm, supporting means therefor having provision for permitting a plurality of adjustments of said arm, and a device for securing said arm in adjusted position against movement in any direction and releasable to permit one only or a plurality of said adjustments.

10. An adjustable standard for lamps and the like comprising an arm, a base, means for supporting said arm from said base and constructed and arranged to permit said arm to move longitudinally and also to swing on said base, and a device for securing said arm in position against movement in any direction and adapted to release said arm to permit longitudinal movement thereof while holding the same against swinging movement.

11. An adjustable standard for lamps and the like comprising a support, a member mounted to turn in said support, an arm slidably mounted in said member, and a device adapted in one position to hold said member against movement in said support while permitting movement of said arm in said member and in another position to simultaneously clamp said arm in said member and said member in said support.

12. An adjustable standard for lamps and the like comprising a head, a stud mounted to turn in said head, an arm slidably mounted in said stud, means for clamping said arm in said stud, and means for securing said stud in said head and thereafter ope 'ating said clamping means to clamp said arm in said stud.

13. An adjustable standard for lamps and the like comprising a head, a stud mounted to turn in said had, and provided beyond said head with a transverse bore, an arm slidably mounted in said bore, and a member for clampingsaid arm in said bore, said member and head having cooperating notched edges in engagement with said member is in clamping position.

1 1. An adjustable standard for lamps and the like comprising a head having a notched surface or edge, a stud mounted to turn and slide in said head and provided beyond said head with a transverse bore, a thimble on said stud having openings registering with the ends of said bore and a notched edge cooperating with the notched surface on said head, an aran slidably mounted in said bore and openings, and a nut on said stud and engaging said head for drawing said notched edges into engagement and for clamping said arm between the side of said bore and the edges of said openings.

15. An adjustable standard for lamps and the like comprising an arm, supporting means therefor having provision for permitting a plurality of adjustments of said arm, and means for positively holding said arm against movement in one direction and for frictionally holding the same against movement in another direction.

16. An adj ustablc standard for lamps and the like comprising an arm, supporting means therefor having provision for permitting a plurality of adjustments of said arm, and means for securing said arm in adjusted position against movement in any direction and for releasing the same to permit move-' ment in one direction while positively holding the same against movement in another direction.

17 An adjustable standard for lamps and the like comprising an arm, a base, means for supporting said arm from said base and constructed and arranged to permit said arm to move longitudinally and also to swing on said base, and means for frictionally holding said arm against longitudinal movement and for positively holding the same against swinging movement.

18. An adjustable standard for lamps and the like comprising a support, a member mounted to turn in said support, an arm slidably mounted in said member, and means for positively holding said member against movement in said support and for frictionally holding said arm against movement in said member. V

In testimony whereof I afiix my signature.

in presence of two Witnesses.

ANKER S. LYHNE.

Witnesses:

FRANK W. HANNoN, ISAAC L. FERRIs.

Copies of this patent may be obtained for five'cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

